style15 returns "Null check operator used on a null value"

[rexludus]

what am i missing in here?

here is my code:

`import 'package:airfryer_delight/features/add_recipe/views/add_recipe.dart'; import 'package:flutter/material.dart'; import 'package:persistent_bottom_nav_bar/persistent_tab_view.dart';

import '../../helpers/colorbook.dart'; import '../articles/views/articles.dart'; import '../home/views/home.dart'; import '../profile/views/profile.dart'; import '../recipes/views/recipes.dart';

class BNB extends StatefulWidget { const BNB({Key? key}) : super(key: key);

@override State createState() => _BNBState(); }

class _BNBState extends State { final int _selectedIndex = 0;

List _buildScreens() { return [ HomeScreen(), RecipesScreen(), AddRecipeScreen(), ArticlesScreen(), ProfileScreen(), ]; }

List _navBarsItems() { return [ PersistentBottomNavBarItem( icon: Icon(Icons.home), activeColorPrimary: activeColor, inactiveColorPrimary: Colors.grey, ), PersistentBottomNavBarItem( icon: Icon(Icons.restaurant), activeColorPrimary: activeColor, inactiveColorPrimary: Colors.grey, ), PersistentBottomNavBarItem( // icon: Icon(Icons.add, color: Colors.white), icon: Icon(Icons.add), activeColorPrimary: activeColor, inactiveColorPrimary: Colors.grey, ), PersistentBottomNavBarItem( icon: Icon(Icons.article), activeColorPrimary: activeColor, inactiveColorPrimary: Colors.grey, ), PersistentBottomNavBarItem( icon: Icon(Icons.person), activeColorPrimary: activeColor, inactiveColorPrimary: Colors.grey, ), ]; }

@override Widget build(BuildContext context) { return Scaffold( body: PersistentTabView( context, controller: PersistentTabController(initialIndex: _selectedIndex), screens: _buildScreens(), items: _navBarsItems(), confineInSafeArea: true, handleAndroidBackButtonPress: true, resizeToAvoidBottomInset: true, stateManagement: true, hideNavigationBarWhenKeyboardShows: true, popAllScreensOnTapOfSelectedTab: true, popActionScreens: PopActionScreensType.all, itemAnimationProperties: ItemAnimationProperties( // Navigation Bar's items animation properties. duration: Duration(milliseconds: 200), curve: Curves.ease, ), screenTransitionAnimation: ScreenTransitionAnimation( // Screen transition animation on change of selected tab. animateTabTransition: true, curve: Curves.ease, duration: Duration(milliseconds: 200), ), navBarStyle: NavBarStyle.style15, navBarHeight: MediaQuery.of(context).viewInsets.bottom > 0 ? 0.0 : kBottomNavigationBarHeight, ), ); } } `

[diegoalex]

HI, I've figured out the issue while setting the style 15.

It happens because it's requiring to set the decoration border radius.

Setting the decoration on your PersistentTabView will fix this problem.

[5exceptions-megharaypuriya]

I am still getting issue with above code

NavBar styles 15-18 only accept 3 or 5 PersistentBottomNavBarItem items. 'package:persistent_bottom_nav_bar/persistent_tab_view.widget.dart': Failed assertion: line 43 pos 16: 'assertMidButtonStyles(navBarStyle, items!.length)'